PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Unrecognized Benefit Amounts (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 25, 2023
Pension Benefits
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Net actuarial loss (gain), beginning of period	$ 40,487	$ 48,121
Amortization	(344)	(448)
Actuarial gain	(10,244)	(11,029)
Asset loss	2,271	781
Currency translation loss (gain)	(391)	306
Net actuarial loss (gain), end of period	31,779	37,731
Other Benefits
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Net actuarial loss (gain), beginning of period	(87)	(66)
Amortization	0	0
Actuarial gain	(19)	(8)
Asset loss	0	0
Currency translation loss (gain)	0	0
Net actuarial loss (gain), end of period	$ (106)	$ (74)